{"id":"idc-colorectal-liver-metastases","title":"Colorectal-Liver-Metastases","short_title":"colorectal_liver_metastases","aliases":["colorectal_liver_metastases"],"summary":"This collection consists of DICOM images and DICOM Segmentation Objects (DSOs) for 197 patients with Colorectal Liver Metastases (CRLM). The collection consists of a large, single-institution consecutive series of patients that underwent resection of CRLM and matched preoperative computed tomography (CT) scans for quantitative image analysis. Inclusion criteria were (a) pathologically confirmed resected CRLM, (b) available data from pathologic analysis of the underlying non-tumoral liver parenchyma and hepatic tumor, (c) available preoperative conventional portal venous contrast-enhanced multi-detector computed tomography (MDCT) performed within 6 weeks of hepatic resection. Patients with 90-day mortality or that had less than 24 months of follow-up were excluded. Please see the Preoperative CT and Recurrence for Patients Undergoing Resection of Colorectal Liver Metastases (Colorectal Liver Metastases) wiki page to learn more about the images and to obtain any supporting metadata for this collection.","one_liner":null,"identifiers":[{"scheme":"idc_collection_id","value":"colorectal_liver_metastases","url":"https://portal.imaging.datacommons.cancer.gov/explore/?collection_id=colorectal_liver_metastases","is_primary":true,"evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC v3 API /collections","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":null,"locator":null,"confidence":"high","reviewer":null,"reviewed_at":null,"note":null}]},{"scheme":"tcia_collection","value":"Colorectal-Liver-Metastases","url":"https://www.cancerimagingarchive.net/collections/","is_primary":false,"evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC v3 API /collections","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":null,"locator":null,"confidence":"high","reviewer":null,"reviewed_at":null,"note":null}]},{"scheme":"doi","value":"10.7937/QXK2-QG03","url":null,"is_primary":false,"evidence":[{"method":"fulltext","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC collection description","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":"urrence for Patients Undergoing Resection of Colorectal Liver Metastases (Colorectal Liver Metastases) wiki page to learn more about the images and to obtain any supporting metadata for this collection.","locator":"accession extracted from description prose","confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Cross-repository link recovered from prose; verify before relying on it."}]}],"repository":{"name":"NCI Imaging Data Commons","short_name":"IDC","url":"https://portal.imaging.datacommons.cancer.gov","is_nci_crdc_node":true,"is_nih_repository":true},"additional_repositories":[],"program_name":"NCI Imaging Data Commons / The Cancer Imaging Archive","program_url":"https://imaging.datacommons.cancer.gov/","nci_program":"IDC","generating_institutions":[],"data_generation_funding_role":"unknown","version":null,"release_date":null,"last_upstream_update":null,"retrieved_at":"2026-09-18T02:44:36.389375Z","landing_page_url":"https://portal.imaging.datacommons.cancer.gov/explore/?collection_id=colorectal_liver_metastases","cancer_types":[{"label":"Colorectal Cancer","ontology":null,"code":null,"url":null}],"primary_sites":["Colon"],"subject":{"scope":"single","tissues":["BOWEL"],"evidence":[{"method":"derived","source_url":null,"source_label":"cds.subjects","retrieved_at":null,"snippet":null,"locator":"cancer_types: Colorectal Cancer; primary_sites: Colon","confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Repository disease labels or primary sites mapped to pinned tissues."}]},"is_pediatric":null,"model_systems":[],"cohort":{"n_cases":197,"n_samples":null,"n_aliquots":null,"n_files":null,"total_bytes":null,"n_tumor_cases":null,"n_normal_cases":null,"has_matched_normal":null,"demographics":{"sex":{},"race":{},"ethnicity":{},"age_at_diagnosis_years":{},"vital_status":{},"country_or_region":{},"evidence":[]},"evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC v3 API /collections","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":null,"locator":null,"confidence":"high","reviewer":null,"reviewed_at":null,"note":null}]},"assays":[{"modality":"radiology","label":"DICOM medical imaging","platform":null,"n_cases":197,"n_samples":null,"n_files":null,"data_levels":["DICOM series"],"access_tier":"open","evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC v3 API /collections","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":null,"locator":null,"confidence":"high","reviewer":null,"reviewed_at":null,"note":null}]},{"modality":"clinical","label":"Clinical (accompanying data, per IDC supporting_data)","platform":null,"n_cases":null,"n_samples":null,"n_files":null,"data_levels":[],"access_tier":null,"evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC v3 API /collections","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":null,"locator":"field: supporting_data","confidence":"medium","reviewer":null,"reviewed_at":null,"note":null}]}],"clinical_variables":[],"longitudinal":{"has_followup":null,"has_survival_endpoint":null,"survival_endpoints":[],"median_followup_months":null,"max_followup_months":null,"n_cases_with_followup":null,"has_serial_samples":null,"timepoints":[],"n_cases_with_serial":null,"has_treatment_response":null,"response_criteria":[],"evidence":[]},"access":{"tier":"open","open_components":[],"controlled_components":[],"mechanism":"Public DICOM download from the IDC portal, its API, or the idc-index Python package; no account required for public collections.","dua_url":null,"data_access_committee":null,"typical_turnaround":null,"embargo_until":null,"login_required":false,"citation_requirement":"Cite the collection DOI and the IDC/TCIA data-citation guidance.","license":"Per-collection license, typically CC BY 3.0/4.0 or CC BY-NC","publication_policy_url":"https://www.cancerimagingarchive.net/data-usage-policies-and-restrictions/","evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/collections/colorectal_liver_metastases","source_label":"IDC v3 API /collections","retrieved_at":"2026-09-18T02:44:36.389375Z","snippet":null,"locator":null,"confidence":"high","reviewer":null,"reviewed_at":null,"note":null}]},"useful_for":[],"limitations":[{"kind":"harmonization","statement":"Clinical data arrive as 2 collection-specific table(s) with 54 columns in total, named by the submitting trial rather than by a shared vocabulary. The variables exist, but they cannot be compared field by field with the harmonized repositories, so this record's analysis verdicts stay unmeasured.","severity":"major","affected_analyses":[],"mitigation":"Read the table's own schema from https://api.imaging.datacommons.cancer.gov/v3/clinical/tables before planning an analysis.","evidence":[{"method":"api","source_url":"https://api.imaging.datacommons.cancer.gov/v3/clinical/tables","source_label":"IDC v3 API /clinical/tables","retrieved_at":"2026-09-19T03:20:46.830869Z","snippet":null,"locator":"collection_id=colorectal_liver_metastases: 2 table(s), 54 columns in total","confidence":"high","reviewer":null,"reviewed_at":null,"note":null}]}],"inappropriate_uses":[],"primary_publications":[],"reuse":[],"reuse_metrics":{"n_candidates_screened":0,"n_by_tier":{},"n_by_tier_raw":{},"accession_precision":null,"n_citations_to_primary_publication":null,"citation_to_reuse_ratio":null,"has_citable_accession":false,"n_verified_reuse":null,"n_reuse_examined":0,"n_independent_reuse":0,"n_nci_funded_reuse":0,"first_reuse_year":null,"latest_reuse_year":null,"years_since_release":null,"expected_reuse":null,"reuse_gap_index":null,"reuse_gap_percentile":null,"search_strategy_id":"epmc-index-v3","searched_at":"2026-09-20T18:07:48.408729Z","no_reuse_identified":false,"evidence":[{"method":"derived","source_url":null,"source_label":"reuse index","retrieved_at":"2026-09-20T18:07:48.408729Z","snippet":null,"locator":null,"confidence":"low","reviewer":null,"reviewed_at":null,"note":"This dataset has no accession specific enough to search for in the literature, so citation-based reuse cannot be measured. Absence of a count here is not evidence of absence of reuse."}]},"underexplored":{"is_underexplored":false,"basis":["Not assessed: this dataset has no accession specific enough for citation-based reuse tracing, so a shortfall cannot be measured."],"index_value":null,"percentile":null,"comparator_set":"rgi-huber-v2","evidence":[]},"grants":[],"access_steps":[{"order":1,"action":"Open the collection in the IDC portal","detail":"Browse the series before downloading; imaging collections can be very large.","url":"https://portal.imaging.datacommons.cancer.gov/explore/?collection_id=colorectal_liver_metastases","requires":[],"est_time":"5 minutes","cli_snippet":null,"audience":"human","evidence":[{"method":"derived","source_url":"https://portal.imaging.datacommons.cancer.gov/explore/?collection_id=colorectal_liver_metastases","source_label":"IDC access documentation","retrieved_at":"2026-09-21T12:30:59.431960Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]},{"order":2,"action":"Read the collection's own licence","detail":"Per-collection license, typically CC BY 3.0/4.0 or CC BY-NC. IDC licences differ by collection.","url":"https://www.cancerimagingarchive.net/data-usage-policies-and-restrictions/","requires":[],"est_time":"5 minutes","cli_snippet":null,"audience":"human","evidence":[{"method":"derived","source_url":"https://www.cancerimagingarchive.net/data-usage-policies-and-restrictions/","source_label":"IDC access documentation","retrieved_at":"2026-09-21T12:30:59.431962Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]},{"order":3,"action":"Download with idc-index","detail":"The package resolves the collection to its buckets and pulls selected data.","url":"https://github.com/ImagingDataCommons/idc-index","requires":[],"est_time":"hours for a full collection","cli_snippet":"pip install idc-index\npython - <<'PY'\nfrom idc_index import IDCClient\nIDCClient().download_from_selection(collection_id=\"colorectal_liver_metastases\", downloadDir=\".\")\nPY","audience":"human","evidence":[{"method":"derived","source_url":"https://github.com/ImagingDataCommons/idc-index","source_label":"IDC access documentation","retrieved_at":"2026-09-21T12:30:59.431964Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]},{"order":4,"action":"List the series before pulling pixels","detail":"List modality and size first so an agent can choose what to fetch.","url":"https://learn.canceridc.dev/","requires":[],"est_time":null,"cli_snippet":"python - <<'PY'\nfrom idc_index import IDCClient\ni = IDCClient().index\ns = i[i[\"collection_id\"] == \"colorectal_liver_metastases\"]\nprint(len(s), \"series\", s[\"PatientID\"].nunique(), \"patients\",\n      round(s[\"series_size_MB\"].sum() / 1024, 1), \"GB\")\nprint(s[\"Modality\"].value_counts().to_dict())\nPY","audience":"agent","evidence":[{"method":"derived","source_url":"https://learn.canceridc.dev/","source_label":"IDC access documentation","retrieved_at":"2026-09-21T12:30:59.431965Z","snippet":null,"locator":null,"confidence":"medium","reviewer":null,"reviewed_at":null,"note":"Generated by applying the repository's documented access policy to this dataset's identifiers. It is not a reviewer's account of this dataset."}]}],"analysis_examples":[],"agent_package":{"json_url":"/data/datasets/idc-colorectal-liver-metastases.json","jsonld_url":"/data/jsonld/idc-colorectal-liver-metastases.jsonld","croissant_url":"/data/croissant/idc-colorectal-liver-metastases.json","instructions_url":"/data/agent/idc-colorectal-liver-metastases.md","bundle_url":null,"mcp_resource_uri":null},"related_dataset_ids":[],"related_underexplored_ids":[],"review":{"status":"machine_only","reviewer":null,"reviewer_affiliation":null,"reviewed_at":null,"sections_reviewed":[],"open_questions":[],"notes":null},"verification":{"last_verified_at":null,"link_checks":[],"n_links_ok":0,"n_links_broken":0,"upstream_version_seen":null,"upstream_version_changed":false,"upstream_counts_seen":{},"upstream_drift":{},"notes":[]},"is_showcase":false,"completeness_score":16.1,"tags":["idc","imaging","has-clinical-table","has-derived-annotations"],"search_text":null}